Support telemetry processor & initializer

[zhiyuanliang-ms]

Why this PR?

This PR is based on the targeting context accessor PR: #93

Support automatically attaching targeting id to telemetry like request, dependency which are collected automatically by app insights

Similar to the exisiting pattern

Usage

Node

const { createTargetingTelemetryProcessor } = require("@microsoft/feature-management-applicationinsights-node");
const myTargetingProcessor = createTargetingTelemetryProcessor(myTargetingContextAccessor);
appInsights.defaultClient.addTelemetryProcessor(myTargetingProcessor);

Browser

const { createTargetingTelemetryInitializer } = require("@microsoft/feature-management-applicationinsights-browser");
const myTargetingInitializer = createTargetingTelemetryInitializer(myTargetingContextAccessor);
appInsights.addTelemetryInitializer(attachTargetingId);

Reference

Classic Application Insights v2 SDK for Node: doc
Application Insights SDK for browser: doc
POC

[Copilot]

Copilot reviewed 5 out of 17 changed files in this pull request and generated no comments.

Files not reviewed (12)

• src/feature-management-applicationinsights-browser/package.json: Language not supported
• src/feature-management-applicationinsights-node/package.json: Language not supported
• src/feature-management/package-lock.json: Language not supported
• src/feature-management/package.json: Language not supported
• src/feature-management/src/common/ITargetingContext.ts: Evaluated as low risk
• src/feature-management/src/filter/TargetingFilter.ts: Evaluated as low risk
• src/feature-management/src/index.ts: Evaluated as low risk
• src/feature-management/src/IFeatureManager.ts: Evaluated as low risk
• src/feature-management-applicationinsights-node/src/index.ts: Evaluated as low risk
• src/feature-management/src/featureManager.ts: Evaluated as low risk
• src/feature-management-applicationinsights-browser/src/index.ts: Evaluated as low risk
• src/feature-management/test/targetingFilter.test.ts: Evaluated as low risk

Comments suppressed due to low confidence (1)

src/feature-management-applicationinsights-node/src/telemetry.ts:52

• The warning message 'Targeting id is undefined.' is unclear. Consider changing it to 'TargetingContextAccessor returned undefined userId.' to provide more context.

console.warn("Targeting id is undefined.");

[rossgrambo]

I imagine this PR needs to pull the updates from the other PR